Version-Release number of selected component (if applicable):
libvirt-daemon-9.5.0-7.el9_3.x86_64 
qemu-kvm-8.0.0-16.el9_3.x86_64
 
 
How reproducible:
100%
 
Steps to Reproduce:
1. Start a guest 
2. Create one qcow2 image,and check it selinux label
   a. qemu-img create /var/lib/libvirt/images/device_test_fd -f qcow2 1G -o preallocation=falloc
   b. [root@xx# ls -Z /var/lib/libvirt/images/device_test_fd
       unconfined_u:object_r:virt_image_t:s0 /var/lib/libvirt/images/device_test_fd
 
3  Create one disk xml() associated with it
 
<disk type="file" device="disk">
 <target dev="vdb" bus="virtio" />
 <driver name="qemu" type="qcow2" />
 <source file="/var/lib/libvirt/images/device_test_fd" fdgroup="diskfdgroup" />
</disk>
 
4. Try to attach the device
 

virsh "dom-fd-associate avocado-vt-vm1 diskfdgroup 6 ; attach-device avocado-vt-vm1 /root/.libvirt-ci-venv-ci-runtest-gxjHNF/mydisk.xml ;" 6<>/var/lib/libvirt/images/device_test_fd
 
 
Actual result:
 
error: Failed to attach device from /root/.libvirt-ci-venv-ci-runtest-gxjHNF/mydisk.xml
error: internal error: unable to execute QEMU command 'add-fd': No file descriptor supplied via SCM_RIGHTS
 
 
Expected results:
attach-device should succeed
 
Additional info:
However, attach disk can succeed using attach-disk by below command:
virsh "dom-fd-associate avocado-vt-vm1 diskfdgroup 6  ; attach-disk avocado-vt-vm1 /var/lib/libvirt/images/device_test_fd vdb;" 6<>/var/lib/libvirt/images/device_test_fd